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Reinforcement process method for pile bottom sediment removal of pouring pile

A process method and technology of cast-in-place piles, which are applied to sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as potential safety hazards, sediment failure to meet regulations, and influence on the strength of piles, so as to meet safety indicators and thoroughly Effects of clearing and improving structural strength

Active Publication Date: 2016-11-16
GUANGZHOU CITY LUBAN CONSTR
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Problems solved by technology

[0004] However, according to actual construction applications, the above hole cleaning methods have certain limitations in the quality of hole cleaning, construction speed, and scope of application, so that after pouring concrete, there are still a considerable number of piles whose sediment does not meet the specification limit. Requirements, at the same time, because the sediment does not meet the requirements, it will affect the strength of the pile body after the pile is completed, and there are potential safety hazards

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  • Reinforcement process method for pile bottom sediment removal of pouring pile

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Embodiment Construction

[0027] Embodiments of the present invention are described in detail below:

[0028] like figure 1 As shown, a process method for slag removal and reinforcement at the bottom of a cast-in-place pile, comprising the following steps:

[0029] S1: Open at least one slag cleaning hole at the top of the pile body, and ensure that the slag cleaning hole extends to the sediment layer at the bottom of the pile;

[0030] S2: The slag cleaning equipment is installed in place, and the water and gas pipes are extended from the slag cleaning hole and the nozzle is close to the bottom of the hole;

[0031] S3: Turn on the water supply equipment, and perform high-pressure water jetting to the sediment layer at the bottom of the pile through the water pipe to complete the first slag removal treatment;

[0032] S4: Turn on the gas supply equipment, pass high-pressure gas and high-pressure water jet to the sediment layer at the bottom of the pile through the water and gas double pipes, and use...

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Abstract

The invention discloses a reinforcement process method for pile bottom sediment removal of a pouring pile. The reinforcement process method comprises the following steps: forming at least one sediment removal hole in the top of a pile body, and ensuring that the sediment removal hole extends to a pile bottom sediment layer; installing sediment removal equipment in place, stretching a water tube and a gas tube from the sediment removal hole and enabling tube orifices to approach to a hole bottom position; starting water supply equipment, and carrying out high-pressure water jetting on the pile bottom sediment layer through the water tube to complete primary sediment removal treatment; starting gas supply equipment, charging a high-pressure gas in the pile bottom sediment layer and carrying out the high-pressure water jetting on the pile bottom sediment layer through the water tube and the gas tube, and completing secondary sediment removal treatment through the double processes of high-pressure water jetting and gas lift circulation; pulling away the water tube and installing a grouting tube in situ, starting grouting equipment and the gas supply equipment simultaneously, and carrying out reinforcement treatment on the pile body through a gas-injecting and grouting method; and stopping the equipment when a grout overflows from the orifice of the sediment removal hole. The reinforcement process method disclosed by the invention is capable of realizing efficient and thorough elimination for pile bottom sediments, good in sediment removal effect, and capable of increasing the structural strength of the pile body, meeting safety indexes, and meeting the requirements of construction technical indexes.

Description

technical field [0001] The invention relates to the technical field of building pile foundation construction, in particular to a process method for slag removal and reinforcement at the bottom of cast-in-place piles. Background technique [0002] The construction methods of bored piles include rotary drilling (positive circulation method, reverse circulation method), impact drilling, punching drilling, submersible electric drilling, rotary drilling, long auger and so on. With any of the above construction methods, the problem of sedimentation will inevitably occur at the bottom of the pile. According to different pile forming techniques and geological factors, the thickness of pile bottom sediment is usually 0.5m ~ 2.5m. my country's "Technical Specification for Construction Pile Foundation" stipulates that the pile bottom sediment should not be greater than 0.05m. According to the statistics of construction data, the unqualified rate of piles caused by pile bottom sediment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/64E02D13/08
CPCE02D5/64E02D13/08
Inventor 谷伟平杨用文杨列祥
Owner GUANGZHOU CITY LUBAN CONSTR
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